Bridgestone: Rim Width. Improving Steering Performance

2010

Rim Width

Rim Width Wider Narrower
Grip Increase Decrease
Handling Performance Increase Decrease
Steering Response Quick Slow
Lateral Stiffness Hard Soft
Wet Performance Decrease Increase
Rolling Resistance Increase Decrease

Example of rim width adjustment:

  1. In the case of understeering: Make the front rim wider or rear rim narrower.
  2. In the case of oversteering: Make the rear rim wider or the front rim narrower.
  3. In the case of rain conditions: Make the front and rear rim narrower.

Improving Steering Performance

Tire Size Oversteer Understeer
Front

Narrower

Rear

Wider

Front

Wider

Rear

Narrower

Compound Change

to

Lower Grip

Change

to

Higher Grip

Change

to

Higher Grip

Change

to

Lower Grip

Inflation

Pressure

(Adjust Within

Permissable Range)

Entering

Corner

(Constant Speed)

Lower Raise Raise Lower
Exiting

Corner

(Acceleration)

Raise Lower Lower Raise
Rim Width Narrower Wider Wider Narrower
Track Width Narrower Wider Wider Narrower

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